[Password Manager] Ignore autofilling invisible password fields.

components/autofill/content/renderer/password_form_conversion_utils.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/content/renderer/password_form_conversion_utils.h"
 
 #include <string>
 
 #include "base/i18n/case_conversion.h"
 #include "base/lazy_instance.h"
@@ skipping 346 matching lines @@
                                       kAutocompleteCurrentPassword) ||
         HasAutocompleteAttributeValue(*input_element, kAutocompleteNewPassword);
 
     // If the password field is readonly, the page is likely using a virtual
     // keyboard and bypassing the password field value (see
     // http://crbug.com/475488). There is nothing Chrome can do to fill
     // passwords for now. Continue processing in case when the password field
     // was made readonly by JavaScript before submission. We can do this by
     // checking whether password element was updated not from JavaScript.
     if (input_element->isPasswordField() &&
+        form_util::IsWebNodeVisible(*input_element) &&
         (!input_element->isReadOnly() ||
          (nonscript_modified_values &&
           nonscript_modified_values->find(*input_element) !=
               nonscript_modified_values->end()) ||
          password_marked_by_autocomplete_attribute)) {
       // We add the field to the list of password fields if it was not flagged
       // as a special NOT_PASSWORD prediction by Autofill. The NOT_PASSWORD
       // mechanism exists because some webpages use the type "password" for
       // fields which Autofill knows shouldn't be treated as passwords by the
       // Password Manager. This is ultimately bypassed if the field has
@@ skipping 254 matching lines @@
 }
 
 bool HasAutocompleteAttributeValue(const blink::WebInputElement& element,
                                    const char* value_in_lowercase) {
   return base::LowerCaseEqualsASCII(
       base::StringPiece16(element.getAttribute("autocomplete")),
       value_in_lowercase);
 }
 
 }  // namespace autofill